摘要
为了得到管状大厚度V形接头最佳焊接位置工艺方案和不同焊接位置的残余应力变化规律,从不同焊接位置的角度出发,利用非线性有限元软件Marc,对管状大厚度V形接头焊接温度场和残余应力场的影响进行了有限元数值分析,并通过实际测试结果进行验证。结果表明:在管状大厚度V形接头多层焊的过程中,起弧端距离“凸台”位置越近,焊接残余应力越容易表现为拉应力;焊接位置与结构“凸台”保持一定的距离,可以减少焊接接头残余应力的产生。
In order to obtain optimal welding position and changes of residual stress at different welding positions,effects of welding temperature field and residual stress field of tubular V-joint with large thickness at different welding positions was analyzed by nonlinear finite element software Marc,and further verified by actual measurement results.Results show that during multi-layer welding process of tubular V-joint with large thickness,the closer the distance between starting arc end and“boss”position,the easier is welding residual stress as a tensile stress.Keeping a certain distance between the welding position and the“boss”position could reduce the residual stress of welding V-joint.
作者
张子傲
张利国
杨丽
杨康
王乐
李刚
ZHANG Zi-ao;ZHANG Li-guo;YANG Li;YANG Kang;WANG Le;LI Gang(College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;Manufacturing Inspection Office,Shenyang Aircraft Airworthiness Certification Center of Civil Aviation of China,Shenyang 110043,China;Design Department,Liaoning General Aviation Academy,Shenyang 110136,China;Process Department,Shenyang Blower Group Nuclear Power Pump Co.,Ltd,Shenyang 110142,China)
出处
《沈阳航空航天大学学报》
2021年第6期1-7,共7页
Journal of Shenyang Aerospace University
基金
辽宁省教育厅新型智库项目(项目编号:JYT2020141)
辽宁省教育厅重点攻关及服务地方项目(项目编号:JYT2020156)。
关键词
管状
大厚度
V形接头
焊接位置
残余应力
tubular
large thickness
V-joint
welding position
residual stress
